Sta-Bil Ethanol Fuel Stabilizer is a revolutionary additive that combats the harmful effects caused by modern, ethanol-blended fuels in cars, trucks, and small engines used on a regular basis. Using a premium formula, it cleans out the entire fuel system including fuel injectors, carburetors, and intake valves to remove water, prevent corrosion, and improve performance. It is safe and recommended to use with each fill-up. Sta-Bil Fuel Stabilizer will keep your engines free from gum and varnish so it runs cleaner, smoother, and stronger than ever before.